Although tungsten inert gas welding is considered one of the cleanest welding techniques, which is virtually “fumeless”, recent studies show, there is a significant amount of nano-sized particles generated during the process. To protect the welding personnel from possible harmful effects of inhalation of fume particles, fume extractor torches are developed. One such welding fume extractor torch was tested and compared to a conventional one during manual welding of unalloyed structural steel. Using the fume extractor torch, a significantly lower amount of nano-particles was measured in the welder’s personal breathing zone effectively decreasing the exposure to possible harmful effects of those nano-sized particles.

尽管钨极惰性气体保护焊被认为是最清洁的焊接技术之一，几乎“无烟”，但最近的研究表明，在该过程中会产生大量纳米级颗粒。为了保护焊接人员免受吸入烟雾颗粒可能造成的有害影响，人们开发了排烟焊枪。在非合金结构钢的手工焊接过程中，对一种此类焊接排烟焊枪进行了测试，并与传统焊枪进行了比较。使用排烟焊枪，在焊工个人呼吸区测量到的纳米颗粒数量明显减少，有效减少了暴露于这些纳米颗粒可能产生的有害影响。